Exporting then re-importing data destroyed every import configuration:
dataExportService serialised only categories, suppliers, keywords and
transactions, then ran DELETE FROM import_sources on restore and replaced
them with a synthetic 'Data Import' source. After restoring a backup, every
source had to be reconfigured by hand.
- Serialise import_sources and import_config_templates into the envelope,
with an explicit format_version; a file without one is the earlier format
and its missing arrays are treated as empty.
- Wrap wipe + restore in withTransaction, which the service had nowhere:
a constraint violation mid-restore used to destroy financial history with
no rollback.
- Restore templates BEFORE sources (template_id is a foreign key), upserting
by name and remapping template_id through the resolved ids, so restoring
into a profile that already has templates no longer hits UNIQUE(name).
- Whitelist amount_mode and sign_convention at the import boundary with a
readable message rather than an SQLite constraint error.
Resolves#331
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
